Fluid lift pump



Aprf 1945.

A. K. WADE, v.im

FLUID LIFT PUMP Filed Nov. 1, '1945 @que Kal/@da IIIIIIIIIIIIIIJ Dump.'

Patented Apr. 17,` l1945 2,373,985 FLUID Lu'r PUMP AddieKinch Wade, Jr., San Diego, Cali-f. AAnnuelles Nuvembei- 1, 1943, sensi'Ns. 508,598 2 claims. '(Ci. loa- 232i This invention relates to fluid lift pumpsy of the air pressure type, and has more particuglar .reference to an improved foot piece for such a The 'primary .object oi' the present invention is to provide, ina fluid lift pump of the air p'ressure type, a foot piece of simple and durable construction which may be conveniently andleco'- nomically manufactured, .and which will operate eillciently for the intended PUI'DOse.

The invention consists in the novel form, combination and arrangement of parts hereinafter Amore i'ully described, shown in the accompanying drawing and claimed.

. In the drawing, wherein like reference characters indicate corresponding parte throughout the several views: Figure 1 is a view, partly in vertical section and partly in elevation, showing a fluid lift pump' positioned in a well tubing and having a foot piece constructed in accordance with the present invention. t

Figure 2 is an elevational view of the foot piece.

the foot piece shown in Figure 2.

Figure 4 is a horizontal' section taken on line `Figure 3 is a central vertical sectional view of I-l of Figure 3.

Figures 5-7 are diagrammaticviews of modified structures.

aerei-ring in asten to the drawing, In designates generally a conventional well tubing having an -outlet II near its-top. v,The fluid lift pump is adapted to be positioned n the well tubing- I with the foot piece I2 positioned adjacent the bottom of the 'tubing Il. As'

shown, the foot piece I2' includes a relatively long air supply pipe section I3 having a side opening I near its lower end, a shorter air discharge pipe .I disposed parallel' to and rigidly secured throughout its length, preferably b y welding, as

at It, in contact with the lower end portion oithe air supply pipe section Il at one sideoi' the latter. The air discharge pipe Il comprises a straight pipe section having a side opening II registered with the side opening I4 -oi' the air Supply pipe section- Il. The pipe section Il' is open-at the top and externally threaded at its upper end, as at Il.. to facilitate connection ofen- -other pipev section I! therewith by'means of a coupling 2l. \The air discharge pipe Il is alsoy open at the top, and the lower ends of the Dip'esection I l andthe pipe Il are suitably closed,

such as by. means of threaded kclosure-illu 2l and 22, respectively.

It will beapvarent that the present toot 'ss theirline of contact.

may be readily and economically manui'ac by simplyproviding two pipe sections ofV the-required different' lengths, forming the openings I4 and I1 in them, placing the two pipes irl-proper side-by-side relation, and then welding them to 5 get lier, the closures 2| and 22 being duly-inserted and the upper end of the pipe section I3 being duly threaded at I8. The foot piece is of very rigid and durable construction, as will be evident.

While I have specifically illustrated and del0 scribed a foot piece having a singleafir discharge pipev I5, it will be apparent that additional air discharge pipes may be similarly Vassociatedwith j lthe pipe section I3 in groupedrelatlon about the latter, as diagrammatically shown in Figures 5 l5 to '7, inclusive. As this is mere duplication, speciflc illustration and description thereof is deemed unnecessary. Also, while the pipes have been referred to as air supply and discharge pipe, itwlll be understood that steam or any other gaseous pumping medium under pressure; may be used in airi Inoperation, the air rother gaseous pumpi'ng medium under pressure is supplied to the pipe section I3v from any Vsuitable source, and this pumping medium will pass through the openings Il and I1 in to. and upwardly from the discharge pipe i! beneath the column oi' liquid'wlthin-the well tubing. AIn this way, the column of liquid in the tubing III will .be iorced upwardly and discharged through the outlet II. While the device has been described as a pump, it is to be understood that the invention is capable of other uses where -a pressure device of this general kind is employed. Minor changes in details of construc- 'tion are contemplated such asV fall within the spirit oi' the invention as claimed.

What I claim is:

1'.v A foot piece for s uuidV uit pump or the air pressure type. comprising a relatively long air sup- 4c ply pipe section having a.. side Opening nearA its lower end. a shorter air discharge pipe disposed parallel to and rigidly secured throughout `its length to and in contact with the lower end portion of vsaid airsupplypipe section at one side 4s or the istter, said air discharge pipe comprising a. straight pipe section having a side opening registered with the side opening of the air supply pipe section and being open at thetop,- a'clcsure F for the lower end o! said air supply pipe section. anda closure for the lower end oi' said lall' charge pipe.

2.' The construction denne'din 5 the air supply ipesection Pipe are welded-tog 

